<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Webpack 入门</title>
    <script src="./build.js"></script>

    <script>
      function myadd(){
            result = mainAdd(10,12);
            console.log(result);

      }
    
    </script>
</head>
<body>
    
   <input type="text" >  + <input type=" text" > <button onclick="myadd();">=</button> <input type="text" >

</body>
</html>